We clearly aren't going to agree on this so happy to agree to disagree but I'd add one final comment. To my mind any real estate in the immediate area around Brighton is a solid, long term investment. Its a city that nearly matches London for land value and is growing in both size and affluence. Therefore, even if you assume no long term value to the stadium itself, the real-estate its built on will continue to appreciate in value for anyone looking at the long term.
1: The stadium, which you agree has no long term value other than as a stadium, has a cost of £90 million, which will have to be written off.
2: The land upon which it is built is NOT in the affluent part of Brighton (I'm from Woodingdean, I should know), furthermore, Brighton Council do have restrictions on what can be done with this land.
3: There would be further costs incurred in developing whatever these mysterious investors want to develop.
You have not given any figures to support your assertions, that is the first thing any 'investor' would look at. Ultimately it is a numbers game, and they don't add up for anything other than TB using the Albion as a personal plaything, fortunately his love of the club means that his role is that of a benevolent dictator, rather than asset stripper as we previously had in the guise of Archer and Stanley.